Question

What is Herons formula?

Answer 1

Area of a triangle can be calculated if all sides of a triangle.

Just use this two step process:
Step 1: Calculate "s" (half of the triangles perimeter): $s=\frac{a+b+c}{2}$
Step 2: Then calculate the Area: $A=\sqrt{s(s-a)(s-b)(s-c)}$